CA1003142A - Keyboard with key-operated switches for an electrical circuit - Google Patents

Keyboard with key-operated switches for an electrical circuit

Info

Publication number
CA1003142A
CA1003142A CA213,162A CA213162A CA1003142A CA 1003142 A CA1003142 A CA 1003142A CA 213162 A CA213162 A CA 213162A CA 1003142 A CA1003142 A CA 1003142A
Authority
CA
Canada
Prior art keywords
keyboard
key
electrical circuit
operated switches
switches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA213,162A
Other languages
English (en)
Other versions
CA213162S (en
Inventor
Leif H. Andersson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Facit AB
Original Assignee
Facit AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Facit AB filed Critical Facit AB
Application granted granted Critical
Publication of CA1003142A publication Critical patent/CA1003142A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring
CA213,162A 1973-11-07 1974-11-06 Keyboard with key-operated switches for an electrical circuit Expired CA1003142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7315095A SE375868B (da) 1973-11-07 1973-11-07

Publications (1)

Publication Number Publication Date
CA1003142A true CA1003142A (en) 1977-01-04

Family

ID=20319031

Family Applications (1)

Application Number Title Priority Date Filing Date
CA213,162A Expired CA1003142A (en) 1973-11-07 1974-11-06 Keyboard with key-operated switches for an electrical circuit

Country Status (11)

Country Link
US (1) US3927284A (da)
JP (1) JPS5074783A (da)
CA (1) CA1003142A (da)
CH (1) CH578242A5 (da)
DE (1) DE2451546C3 (da)
DK (1) DK564374A (da)
FR (1) FR2250193A1 (da)
GB (1) GB1467854A (da)
IT (1) IT1021996B (da)
NO (1) NO139622C (da)
SE (1) SE375868B (da)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028515A (en) * 1975-09-15 1977-06-07 Illinois Tool Works Inc. Spring contact switch for dual in line multiple switch assembly having momentary actuated lighted indicators
SE398572B (sv) * 1975-12-22 1977-12-27 Raeder Eskil Tryckknapp
JPS5812230Y2 (ja) * 1976-05-20 1983-03-08 松下電器産業株式会社 電子楽器用鍵盤装置
JPS5734650Y2 (da) * 1977-01-28 1982-07-30
US4088855A (en) * 1977-02-28 1978-05-09 Korry Manufacturing Co. Keyboard electro-mechanical switch with coil spring contact
DE2805597A1 (de) * 1978-02-10 1979-08-16 Petrick Gmbh Elektro Mech Drucktastenschalter
JPS6222986Y2 (da) * 1978-09-22 1987-06-11
US4520247A (en) * 1984-03-05 1985-05-28 Columbus Mckinnon Corporation Pendant type electrical switching device
DE3431347A1 (de) * 1984-08-25 1986-03-06 Rolf Dipl.-Ing. 7314 Wernau Beck Drucksensor
US5036291A (en) * 1990-05-11 1991-07-30 General Instrument Corporation On channel agile FM demodulator
US6951465B2 (en) * 2002-01-15 2005-10-04 Tribotek, Inc. Multiple-contact woven power connectors
US7056139B2 (en) * 2002-01-15 2006-06-06 Tribotek, Inc. Electrical connector
US20040214454A1 (en) * 2002-01-15 2004-10-28 Tribotek, Inc. Method and apparatus for manufacturing woven connectors
US7077662B2 (en) * 2002-01-15 2006-07-18 Tribotek, Inc. Contact woven connectors
US7083427B2 (en) 2002-01-15 2006-08-01 Tribotek, Inc. Woven multiple-contact connectors
US6942496B2 (en) 2002-01-15 2005-09-13 Tribotek, Inc. Woven multiple-contact connector
GB2419467C (en) * 2003-07-11 2007-01-09 Tribotek Inc Multiple-contact woven electrical switches
US7097495B2 (en) 2003-07-14 2006-08-29 Tribotek, Inc. System and methods for connecting electrical components
US7140916B2 (en) * 2005-03-15 2006-11-28 Tribotek, Inc. Electrical connector having one or more electrical contact points
US7214106B2 (en) * 2005-07-18 2007-05-08 Tribotek, Inc. Electrical connector

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630503A (en) * 1951-03-05 1953-03-03 Central Commercial Ind Inc Electric switch
US2573895A (en) * 1951-04-25 1951-11-06 Central Commercial Ind Inc Electric switch
US2931877A (en) * 1958-02-20 1960-04-05 Edward J Henley Electrical contact device
US3226493A (en) * 1963-10-02 1965-12-28 Automatic Elect Lab Push button control unit
US3432635A (en) * 1965-02-04 1969-03-11 Paolo Settimio Soprani Switches and mechanism for forming chords in electronic musical instruments
GB1139756A (en) * 1965-04-28 1969-01-15 Ericsson Telefon Ab L M Electric contact mechanism
US3369097A (en) * 1966-04-30 1968-02-13 Nippon Musical Instruments Mfg Contact device for electric switches
FR2102579A5 (da) * 1970-08-10 1972-04-07 Arvai T
US3697706A (en) * 1971-06-23 1972-10-10 Baldwin Co D H Push type electric switch with contact post, movable coil spring contact and interposed non conductive plunger
US3743798A (en) * 1971-09-13 1973-07-03 North American Rockwell Elongated spring coil conductors applying tension force to pushbutton actuators in keyboard matrix switch assembly
US3735058A (en) * 1971-09-15 1973-05-22 Addmaster Corp Keyboard printed circuit switch assembly with axially movable coil spring contact and associated key type actuator

Also Published As

Publication number Publication date
SE375868B (da) 1975-04-28
IT1021996B (it) 1978-02-20
CH578242A5 (da) 1976-07-30
GB1467854A (en) 1977-03-23
DK564374A (da) 1975-06-30
FR2250193A1 (da) 1975-05-30
DE2451546C3 (de) 1979-05-03
NO139622C (no) 1979-04-25
NO139622B (no) 1979-01-02
US3927284A (en) 1975-12-16
NO744007L (da) 1975-06-02
JPS5074783A (da) 1975-06-19
DE2451546B2 (de) 1978-09-14
DE2451546A1 (de) 1975-05-15

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